Spending money

	Before the beginning of the school year, Ann buys a computer costing 12 € and a batch of pens costing 10 €. She gives two 20 €notes to the cashier. How much did she spend?	€
	During the sales, between the 15th, January and the 15th, February 2007, a tradesman sells a 3 mega pixels numerical camera with a handing-over of 60 €. Mr. Smith bought this camera on the13th, February and paid 200 €. How much did this camera cost before the sales?	€